diff options
| author | Sam Anthony <sam@samanthony.xyz> | 2025-09-05 17:21:31 -0400 |
|---|---|---|
| committer | Sam Anthony <sam@samanthony.xyz> | 2025-09-05 17:21:31 -0400 |
| commit | 38040fcaa3f943b26f5d5668ecea5fc4607535a7 (patch) | |
| tree | 50be688b39ed77ac4213c4b7ab3c59bbf420c1f5 /sw/usbcom | |
| parent | ba6fb7522c7333b3a9081a823f2b93a425b36022 (diff) | |
| download | can-gauge-interface-38040fcaa3f943b26f5d5668ecea5fc4607535a7.zip | |
debug usb
Diffstat (limited to 'sw/usbcom')
| -rw-r--r-- | sw/usbcom/usbcom.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/sw/usbcom/usbcom.c b/sw/usbcom/usbcom.c index 920b4a1..1568d88 100644 --- a/sw/usbcom/usbcom.c +++ b/sw/usbcom/usbcom.c @@ -8,7 +8,7 @@ #define TIMEOUT_MS 1000 -#define BUF_SIZE 64 +#define BUF_SIZE 512 #define INTERFACE 0 @@ -94,9 +94,9 @@ txChars(libusb_device_handle *devh, unsigned char *data, int n) { while (actualLen < n) { res = libusb_bulk_transfer(devh, EP_OUT_ADDR, data, n, &actualLen, TIMEOUT_MS); if (res == LIBUSB_ERROR_TIMEOUT) { - printf("Timeout (%d)\n", actualLen); + printf("Tx timeout (%d)\n", actualLen); } else if (res < 0) { - fprintf(stderr, "Error sending data\n"); + fprintf(stderr, "Tx error: %s\n", libusb_strerror(res)); } assert(actualLen <= n); n -= actualLen; @@ -108,17 +108,17 @@ txChars(libusb_device_handle *devh, unsigned char *data, int n) { // Returns number of bytes read, or -1 on error static int rxChars(libusb_device_handle *devh, unsigned char *data, int size) { - int res, actualLen; + int res, len; - res = libusb_bulk_transfer(devh, EP_IN_ADDR, data, size, &actualLen, TIMEOUT_MS); + res = libusb_bulk_transfer(devh, EP_IN_ADDR, data, size, &len, TIMEOUT_MS); if (res == LIBUSB_ERROR_TIMEOUT) { - fprintf(stderr, "Timeout\n"); + fprintf(stderr, "Rx timeout\n"); return -1; } else if (res < 0) { - fprintf(stderr, "Error receiving data\n"); + fprintf(stderr, "Rx error: %s\n", libusb_strerror(res)); return -1; } - return actualLen; + return len; } // Get line from stdin @@ -192,3 +192,4 @@ main(int argc, char *argv[]) { teardown(devh); return 0; } + |